- EMDB-51645: CENP-A/H4 di-tetrasome assembled on alpha-satellite DNA. -
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基本情報
登録情報
データベース: EMDB / ID: EMD-51645
タイトル
CENP-A/H4 di-tetrasome assembled on alpha-satellite DNA.
マップデータ
2x(CENP-A/H4)2 di-tetrasome assembled on 147bp alpha-satellite DNA.
試料
複合体: 2x(CENP-A/H4)2 di-tetrasome assembled on alpha-satellite DNA.
タンパク質・ペプチド: Histone H3-like centromeric protein A
タンパク質・ペプチド: Histone H4
DNA: 147 bp human alpha-satellite DNA
DNA: 147 bp alpha-satellite DNA
キーワード
CENP-A/H4 / di-tetrasome / nucleosome / centromere / CENP-A / Human / Cell division. / DNA BINDING PROTEIN
機能・相同性
機能・相同性情報
CENP-A containing chromatin assembly / kinetochore assembly / protein localization to chromosome, centromeric region / condensed chromosome, centromeric region / pericentric heterochromatin / mitotic cytokinesis / establishment of mitotic spindle orientation / chromosome, centromeric region / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin ...CENP-A containing chromatin assembly / kinetochore assembly / protein localization to chromosome, centromeric region / condensed chromosome, centromeric region / pericentric heterochromatin / mitotic cytokinesis / establishment of mitotic spindle orientation / chromosome, centromeric region / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Replacement of protamines by nucleosomes in the male pronucleus / CENP-A containing nucleosome / Packaging Of Telomere Ends / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / Mitotic Prometaphase / Deposition of new CENPA-containing nucleosomes at the centromere / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / EML4 and NUDC in mitotic spindle formation / telomere organization / Inhibition of DNA recombination at telomere / RNA Polymerase I Promoter Opening / Meiotic synapsis / Assembly of the ORC complex at the origin of replication / Resolution of Sister Chromatid Cohesion / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / SUMOylation of chromatin organization proteins / DNA methylation / Condensation of Prophase Chromosomes / Chromatin modifications during the maternal to zygotic transition (MZT) / SIRT1 negatively regulates rRNA expression / HCMV Late Events / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / PRC2 methylates histones and DNA / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / HDMs demethylate histones / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / HDACs deacetylate histones / Nonhomologous End-Joining (NHEJ) / RNA Polymerase I Promoter Escape / Transcriptional regulation by small RNAs / RHO GTPases Activate Formins / Formation of the beta-catenin:TCF transactivating complex / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / G2/M DNA damage checkpoint / NoRC negatively regulates rRNA expression / B-WICH complex positively regulates rRNA expression / DNA Damage/Telomere Stress Induced Senescence / PKMTs methylate histone lysines / Meiotic recombination / Pre-NOTCH Transcription and Translation / RMTs methylate histone arginines / Activation of anterior HOX genes in hindbrain development during early embryogenesis / Separation of Sister Chromatids / Transcriptional regulation of granulopoiesis / HCMV Early Events / structural constituent of chromatin / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / nucleosome / RUNX1 regulates transcription of genes involved in differentiation of HSCs / nucleosome assembly / Processing of DNA double-strand break ends / HATs acetylate histones / Senescence-Associated Secretory Phenotype (SASP) / chromatin organization / MLL4 and MLL3 complexes regulate expression of PPARG target genes in adipogenesis and hepatic steatosis / Oxidative Stress Induced Senescence / Estrogen-dependent gene expression / chromosome, telomeric region / Amyloid fiber formation / protein heterodimerization activity / chromatin binding / protein-containing complex / DNA binding / RNA binding / extracellular exosome / extracellular region / nucleoplasm / nucleus / membrane / cytosol 類似検索 - 分子機能
ジャーナル: bioRxiv / 年: 2025 タイトル: Non-nucleosomal (CENP-A/H4) - DNA complexes as a possible platform for centromere organization. 著者: Ahmad Ali-Ahmad / Mira Mors / Manuel Carrer / Xinmeng Li / Silvija Bilokapić / Mario Halić / Michele Cascella / Nikolina Sekulić / 要旨: The centromere is a part of the chromosome that is essential for the even segregation of duplicated chromosomes during cell division. It is epigenetically defined by the presence of the histone H3 ...The centromere is a part of the chromosome that is essential for the even segregation of duplicated chromosomes during cell division. It is epigenetically defined by the presence of the histone H3 variant CENP-A. CENP-A associates specifically with a group of 16 proteins that form the centromere-associated network of proteins (CCAN). In mitosis, the kinetochore forms on the CCAN to connect the duplicated chromosomes to the microtubules protruding from the cell poles. Previous studies have shown that CENP-A replaces H3 in nucleosomes, and recently the structures of CENP-A-containing nucleosomes in complex with CCANs have been revealed, but they show only a limited interaction between CCANs and CENP-A. Here, we report the cryoEM structure of 2x(CENP-A/H4)-di-tetramers assembled on DNA in the absence of H2A/H2B histone dimer and speculate how (CENP-A/H4)-tetramers and -di-tetramers might serve as a platform for CCAN organization.